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<td class="classHeaderTableLabel">Class</td><td class="classSignature">public class Features</td>
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<td class="classHeaderTableLabel">Source</td><td><a href="http://box2dflash.svn.sourceforge.net/viewvc/box2dflash/Source/Box2D/Collision/Features.as">Features.as</a></td>
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<p></p>
We use contact ids to facilitate warm starting.
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<th>&nbsp;</th><th colspan="2">Property</th><th class="summaryTableOwnerCol">Defined&nbsp;by</th>
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<td class="summaryTablePaddingCol">&nbsp;</td><td class="summaryTableInheritanceCol">&nbsp;</td><td class="summaryTableSignatureCol"><a class="signatureLink" href="#flip">flip</a> : int<div class="summaryTableDescription">
 A value of 1 indicates that the reference edge is on shape2.</div>
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<td class="summaryTablePaddingCol">&nbsp;</td><td class="summaryTableInheritanceCol">&nbsp;</td><td class="summaryTableSignatureCol"><a class="signatureLink" href="#incidentEdge">incidentEdge</a> : int<div class="summaryTableDescription">
 The edge most anti-parallel to the reference edge.</div>
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<td class="summaryTablePaddingCol">&nbsp;</td><td class="summaryTableInheritanceCol">&nbsp;</td><td class="summaryTableSignatureCol"><a class="signatureLink" href="#incidentVertex">incidentVertex</a> : int<div class="summaryTableDescription">
 The vertex (0 or 1) on the incident edge that was clipped.</div>
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<td class="summaryTablePaddingCol">&nbsp;</td><td class="summaryTableInheritanceCol">&nbsp;</td><td class="summaryTableSignatureCol"><a class="signatureLink" href="#referenceEdge">referenceEdge</a> : int<div class="summaryTableDescription">
 The edge that defines the outward contact normal.</div>
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<td class="detailHeaderName">flip</td><td class="detailHeaderType">property</td>
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<code>flip:int</code>&nbsp;&nbsp;[read-write]<p>
 A value of 1 indicates that the reference edge is on shape2.
 </p><span class="label">Implementation</span>
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<code>&nbsp;&nbsp;&nbsp;&nbsp;public function get flip():int</code>
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<code>&nbsp;&nbsp;&nbsp;&nbsp;public function set flip(value:int):void</code>
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<td class="detailHeaderName">incidentEdge</td><td class="detailHeaderType">property</td><td class="detailHeaderRule">&nbsp;</td>
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<code>incidentEdge:int</code>&nbsp;&nbsp;[read-write]<p>
 The edge most anti-parallel to the reference edge.
 </p><span class="label">Implementation</span>
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<code>&nbsp;&nbsp;&nbsp;&nbsp;public function get incidentEdge():int</code>
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<code>&nbsp;&nbsp;&nbsp;&nbsp;public function set incidentEdge(value:int):void</code>
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<td class="detailHeaderName">incidentVertex</td><td class="detailHeaderType">property</td><td class="detailHeaderRule">&nbsp;</td>
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<code>incidentVertex:int</code>&nbsp;&nbsp;[read-write]<p>
 The vertex (0 or 1) on the incident edge that was clipped.
 </p><span class="label">Implementation</span>
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<code>&nbsp;&nbsp;&nbsp;&nbsp;public function get incidentVertex():int</code>
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<code>&nbsp;&nbsp;&nbsp;&nbsp;public function set incidentVertex(value:int):void</code>
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<td class="detailHeaderName">referenceEdge</td><td class="detailHeaderType">property</td><td class="detailHeaderRule">&nbsp;</td>
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<code>referenceEdge:int</code>&nbsp;&nbsp;[read-write]<p>
 The edge that defines the outward contact normal.
 </p><span class="label">Implementation</span>
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<code>&nbsp;&nbsp;&nbsp;&nbsp;public function get referenceEdge():int</code>
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<code>&nbsp;&nbsp;&nbsp;&nbsp;public function set referenceEdge(value:int):void</code>
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